PubAg

Main content area

You searched for: Subject "barium" Remove constraint Subject: "barium"
Start Over

Search

4,374  Search Results

« Previous | 1 - 50 of 4,374 |
Number of results to display per page

Search Results

1. Effects of phase composition and grain size on the piezoelectric properties of HfO2-doped barium titanate ceramics

Author:
Yin, Hong-Mei; Xu, Wen-Jun; Zhou, Heng-Wei; Zhao, Xing-Yu; Huang, Yi-Neng
Source:
Journal of materials science 2019 v.54 no.19 pp. 12392-12400
ISSN:
0022-2461
Subject:
barium titanate,   etc   ; ceramics; temperature;     Show all 3 Subjects
Abstract:
... The effect of grain size and phase compositions on piezoelectric coefficient of BaTi₀.₉₈Hf₀.₀₂O₃ ceramics prepared at a series of sintering temperatures (1320, 1350, 1370, and 1400 °C) was studied. The results showed that the grain size of the ceramics is 0.9, 21.3, 21.6, and 37.2 μm, respectively, and the corresponding phase compositions are the tetragonal–orthogonal, tetragonal–orthogonal–rhombo ...
DOI:
10.1007/s10853-019-03726-y

2. The enhanced activity of base metal modified MgAl mixed oxides from sol-gel hydrotalcite for ethylic transesterification

Author:
Lima-Corrêa, Renata A.B.; Castro, Cínthia S.; Damasceno, Amanda S.; Assaf, José M.
Source:
Renewable energy 2020 v.146 pp. 1984-1990
ISSN:
0960-1481
Subject:
barium,   etc   ; acetates; biodiesel; catalysts; catalytic activity; crystal structure; crystallites; ethanol; fuel production; hydrotalcite; models; oxides; sol-gel processing; soybean oil; strontium; surface area; transesterification;     Show all 17 Subjects
Abstract:
... MgAl hydrotalcite was successfully prepared through the sol-gel method and modified by in situ addition of base metals (Me = K, Ba, Sr and La). The Me–MgAl hydrotalcites were calcined and the obtained oxides were evaluated as catalysts for ethylic transesterification in order to investigate their potential application for biodiesel production. The Me–MgAl characterization revealed that the materia ...
DOI:
10.1016/j.renene.2019.08.047

3. Increase in stability of BaCo/CeO2 catalyst by optimizing the loading amount of Ba promoter for high-temperature water-gas shift reaction using waste-derived synthesis gas

Author:
Lee, Yeol-Lim; Kim, Kyoung-Jin; Jang, Won-Jun; Shim, Jae-Oh; Jeon, Kyung-Won; Na, Hyun-Suk; Kim, Hak-Min; Bae, Jong Wook; Nam, Sung Chan; Jeon, Byong-Hun; Roh, Hyun-Seog
Source:
Renewable energy 2020 v.145 pp. 2715-2722
ISSN:
0960-1481
Subject:
barium,   etc   ; X-ray diffraction; X-ray photoelectron spectroscopy; carbon monoxide; catalysts; ceric oxide; cobalt; renewable energy sources; synthesis gas; transmission electron microscopy;     Show all 10 Subjects
Abstract:
... The loading amount of Ba promoter in the 15 wt% Co/CeO2 catalyst system was varied from 0 wt% to 3 wt%, and the resulting catalysts were used for the high-temperature water-gas shift (HTS) reaction. The catalysts were prepared by the incipient wetness co-impregnation method and studied through various characterization techniques such as X-ray diffraction, Brunauer–Emmet–Teller measurements, CO–che ...
DOI:
10.1016/j.renene.2019.08.050

4. Numerical analysis of phase-change material melting in triplex tube heat exchanger

Author:
Yang, Kun; Zhu, Neng; Chang, Chen; Yu, Haoran; Yang, Shan
Source:
Renewable energy 2020 v.145 pp. 867-877
ISSN:
0960-1481
Subject:
barium,   etc   ; algorithms; computer software; equations; exergy; heat exchangers; heat transfer; latent heat; mass flow; mathematical models; melting; renewable energy sources; temperature; thermal energy;     Show all 14 Subjects
Abstract:
... Latent heat thermal energy storage (LHTES) systems have gained significant attention recently owing to their high energy-storage-density per unit volume and nearly isothermal behavior during the phase-change process. This study numerically investigates the melting performance of a phase-change material (PCM: Ba(OH)2·8H2O) in a triplex tube heat exchanger (TTHX). First, the physical and mathematica ...
DOI:
10.1016/j.renene.2019.06.092

5. Large Electrostrain from the Ferroelectric Aging Effect around a Morphotropic Phase Boundary

Author:
Yang, Yang; Zhou, Zhijian; Xin, Lipeng; Zhou, Chao; Zhang, Lixue; Xiao, Andong; Ren, Xiaobing
Source:
Journal of physical chemistry 2019 v.123 no.6 pp. 3321-3325
ISSN:
1932-7455
Subject:
barium,   etc   ; electric field; physical chemistry;     Show all 3 Subjects
Abstract:
... A large electrostrain of ∼0.245% emerged in an intrinsic-acceptor-doped morphotropic phase boundary (MPB) system Ba(Ce₀.₁Ti₀.₉)O₃–x(Ba₀.₇Ca₀.₃)TiO₃ under an electric field of 30 kV/cm at 0.1 Hz. It is almost twice as that of hard lead zirconate titanates and larger than the strains of other barium-titanate-based systems with either the aging effect or MPB effect. This large electrostrain is induce ...
DOI:
10.1021/acs.jpcc.8b10764

6. Leachability characteristic of heavy metals and associated health risk study in typical copper mining-impacted sediments

Author:
Yan, Bo; Xu, Da-Mao; Chen, Tao; Yan, Zi-Ang; Li, Li-Li; Wang, Ming-Hui
Source:
Chemosphere 2020 v.239
ISSN:
0045-6535
Subject:
barium,   etc   ; arsenic; cadmium; carcinogenicity; copper; environmental monitoring; governance; health effects assessments; heavy metals; leaching; lead; mercury; mining; nickel; pollutants; pollution; public safety; remediation; sediments; spatial variation; stakeholders; zinc; China;     Show all 23 Subjects
Abstract:
... A total of 100 samples were collected from the sediments of a typical copper mining area, south China. Leaching concentrations of selected heavy metals (Ni, Cd, Cu, Pb, Zn, Ba, As, and Hg) were measured to evaluate their distribution patterns and associated health risk. Leaching concentrations of Cu (3.58 ± 1.49 mg/L), Pb (1.50 ± 1.06 mg/L), and Zn (4.04 ± 1.68 mg/L) were significantly higher than ...
DOI:
10.1016/j.chemosphere.2019.124748

7. Inorganic–organic hybridization induced uniaxial zero thermal expansion in MC₄O₄ (M = Ba, Pb)

Author:
Liu, Zhanning; Lin, Kun; Ren, Yang; Kato, Kenichi; Cao, Yili; Deng, Jinxia; Chen, Jun; Xing, Xianran
Source:
Chemical communications 2019 v.55 no.28 pp. 4107-4110
ISSN:
1364-548X
Subject:
barium,   etc   ; chemical reactions; lead; temperature; thermal expansion;     Show all 5 Subjects
Abstract:
... We report two inorganic–organic hybrid materials with pillar-layered architectures, BaC₄O₄ and PbC₄O₄, which show uniaxial zero thermal expansion (ZTE) along the hybrid direction over a wide temperature range. The local structure and lattice dynamic investigations reveal that the ZTE derives from the cooperation of the NTE of the inorganic Ba–O (or Pb–O) layer and the PTE of the squarate pillar. ...
DOI:
10.1039/c9cc00226j

8. Discovery of Polyoxo-Noble-Metalate-Based Metal–Organic Frameworks

Author:
Bhattacharya, Saurav; Ayass, Wassim W.; Taffa, Dereje H.; Schneemann, Andreas; Semrau, A. Lisa; Wannapaiboon, Suttipong; Altmann, Philipp J.; Pöthig, Alexander; Nisar, Talha; Balster, Torsten; Burtch, Nicholas C.; Wagner, Veit; Fischer, Roland A.; Wark, Michael; Kortz, Ulrich
Source:
Journal of the American Chemical Society 2019 v.141 no.8 pp. 3385-3389
ISSN:
1520-5126
Subject:
barium,   etc   ; coordination polymers; ions; nanomaterials; sorption;     Show all 5 Subjects
Abstract:
... Here we report on the synthesis, structure, and characterization of the first example of a polyoxopalladate (POP)-based metal-organic framework (MOF). This novel class of materials comprises discrete polyoxo-13-palladate(II) nanocubes [Pd₁₃O₈(AsO₄)₈H₆]⁸– decorated by four Ba²⁺ ions on each of two opposite faces. These secondary building units (SBUs) are linked to each other via rigid linear organi ...
DOI:
10.1021/jacs.8b13397

9. Lamellar and bundled domain rotations in barium titanate

Author:
Howell, Jane A.; Vaudin, Mark D.; Friedman, Lawrence H.; Cook, Robert F.
Source:
Journal of materials science 2019 v.54 no.1 pp. 116-129
ISSN:
0022-2461
Subject:
barium titanate,   etc   ; X-ray diffraction; crystals; models;     Show all 4 Subjects
Abstract:
... Cross-correlation of electron backscatter diffraction patterns has been used to generate rotation maps of single crystals of tetragonal barium titanate (BaTiO₃) containing multiple lamellae and bundles of ≈ 90° domains. Rotation measurement angular resolutions of 0.1 mrad (0.006°) and spatial resolutions of 30 nm are demonstrated on structures with approximately 1 μm domains extending over 10s of ...
DOI:
10.1007/s10853-018-2831-1

10. Formation of Ba1−xCaxTiO3 solid solutions beyond the solubility limit by ‘sputter-anneal’ method

Author:
Ako, Miho; Kogure, Takeshi; Kobayashi, Yumie; Kyômen, Tôru; Fujisawa, Jun-ichi; Hanaya, Minoru
Source:
Thermochimica acta 2019 v.679 pp. 178339
ISSN:
0040-6031
Subject:
barium; barium titanate,   etc   ; annealing; calcium; crystallization; glass; heat; ions; quartz; separation; solid solutions; solubility; temperature;     Show all 13 Subjects
Abstract:
... To produce Ba1−xCaxTiO3 solid solutions beyond the solubility limit, we performed rf magnetron sputtering using the targets of (BaTiO3)1−x(CaTiO3)x with compositions x from 0 to 1 onto quartz glass substrates without heating the substrates and annealed the formed film samples. The as-prepared film samples by the sputtering were confirmed to have amorphous structures. By annealing the as-prepared a ...
DOI:
10.1016/j.tca.2019.178339

11. Barium calcium titanate solid solution: Non-isothermal kinetic analysis of Ca2+ incorporation into BaTiO3

Author:
Taibi, Ahmed; Chaguetmi, Salem; Louaer, Ali; Layachi, Abdelheq; Satha, Hamid
Source:
Thermochimica acta 2019
ISSN:
0040-6031
Subject:
barium; barium titanate,   etc   ; X-ray diffraction; activation energy; calcium; differential scanning calorimetry; heat; kinetics;     Show all 8 Subjects
Abstract:
... This paper investigates the non-isothermal kinetic analysis of Ca2+ incorporation into BaTiO3 in Ba0.85Ca0.15TiO3 (BCT15) lead-free ferroelectric material, prepared via the solid-state reaction method, using differential scanning calorimetry (DSC) technique at multiple heating rates. The X-ray diffraction technique (XRD) has demonstrated the formation of pure cubic BaTiO3 phase when the BCT15 prec ...
DOI:
10.1016/j.tca.2019.178356

12. Giant electrostrictive effect in lead-free barium titanate-based ceramics via A-site ion-pairs engineering

Author:
Huang, Yanli; Zhao, Chunlin; Yin, Jie; Lv, Xiang; Ma, Jian; Wu, Jiagang
Source:
Journal of materials chemistry A 2019 v.7 no.29 pp. 17366-17375
ISSN:
2050-7496
Subject:
barium; barium titanate,   etc   ; ceramics; electric field; engineering; holmium; hysteresis; ions; lithium; oxygen; temperature; thermal stability;     Show all 12 Subjects
Abstract:
... Electrostrictors offer unique advantages over piezoelectrics, including no poling process, temperature stability and hysteresis-free strain characteristics. Learning from the distinction between disordered and ordered ABI0.5BII0.5O₃ perovskite-structured electrostrictors, the electrostrictive effect enhances with a smaller active space for B ions. Here, we propose a novel design strategy to arouse ...
DOI:
10.1039/c9ta05681e

13. Experimental Evaluation of Common Sulfate Mineral Scale Coprecipitation Kinetics in Oilfield Operating Conditions

Author:
Zhang, Ping; Zhang, Zhang; Zhu, Jiayao; Kan, Amy T.; Tomson, Mason B.
Source:
Energy & fuels 2019 v.33 no.7 pp. 6177-6186
ISSN:
1520-5029
Subject:
barium; barium sulfate,   etc   ; calcium; coprecipitation; electrolytes; fuels; industrial applications; oil fields; strontium; thermodynamics;     Show all 10 Subjects
Abstract:
... As one of the top three water-related production chemistry threats, mineral scale deposition can result in severe oilfield operational issues. Existing studies related to mineral scale deposition and control focus predominately on the thermodynamic aspect of scale deposition with little consideration of scale deposition kinetics. Coprecipitation of different types of mineral scales is a common phe ...
DOI:
10.1021/acs.energyfuels.9b01030

14. Direct Determination of Lead in Sea Water by High-Resolution Atomic Absorption Spectroscopy Using a Mixed Modifier Barium Nitrate–Hydrofluoric Acid

Author:
Sobolev, N. A.; Ivanchenko, N. L.; Kozhevnikov, A. Yu.
Source:
Journal of analytical chemistry 2019 v.74 no.5 pp. 444-448
ISSN:
1061-9348
Subject:
barium; barium nitrate,   etc   ; atomic absorption spectrometry; atomization; detection limit; lead; pyrolysis; seawater; temperature;     Show all 9 Subjects
Abstract:
... A procedure is proposed for the direct determination of lead in sea water by electrothermal atomization high-resolution atomic absorption spectrometry. The effect of background interferences due to sea water matrix is eliminated using a mixed modifier barium nitrate–hydrofluoric acid. The optimum amount of the modifier matrix is 60 µg Ba (NO₃)₂ + 1.52 µg HF. The conditions of analysis are as follo ...
DOI:
10.1134/S1061934819020126

15. Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO₃

Author:
Bae, Hyeongyu; Lee, Kang Taek
Source:
RSC advances 2019 v.9 no.5 pp. 2451-2457
ISSN:
2046-2069
Subject:
barium; barium titanate,   etc   ; crystal structure; emissions factor; ions; light intensity; luminescence; nanoparticles; phase transition; temperature; titanium;     Show all 11 Subjects
Abstract:
... With the increasing number of applications for upconversion materials, a more detailed understanding of the intrinsic mechanisms of their optical processes is required. Thus far, various lanthanide-doped host materials or nanoparticle systems have been investigated as representative upconversion systems owing to their major advantage as optical probes. As for the energetics of upconversion and the ...
DOI:
10.1039/c8ra09783f

16. A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste: Key issue of impurities removal

Author:
Yu, Wenhao; Zhang, Peiyuan; Yang, Jiakuan; Li, Mingyang; Hu, Yuchen; Liang, Sha; Wang, Junxiong; Li, Suyuan; Xiao, Keke; Hou, Huijie; Hu, Jingping; Kumar, R. Vasant
Source:
Journal of cleaner production 2019 v.210 pp. 1534-1544
ISSN:
0959-6526
Subject:
barium; barium carbonate; barium sulfate,   etc   ; batteries; carbon dioxide; desulfurization; energy; iron; leaching; lead; lead nitrate; pH; pastes; sodium carbonate; sodium hydroxide;     Show all 15 Subjects
Abstract:
... Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, including efficient desulfurization and pH-controlled acid leaching, is proposed. Effects of two typical desulfu ...
DOI:
10.1016/j.jclepro.2018.11.133

17. BaAs3: a narrow gap 2D semiconductor with vacancy-induced semiconductor–metal transition from first principles

Author:
Tang, Ping; Yuan, Jun-Hui; Song, Ya-Qian; Xu, Ming; Xue, Kan-Hao; Miao, Xiang-Shui
Source:
Journal of materials science 2019 v.54 no.19 pp. 12676-12687
ISSN:
0022-2461
Subject:
barium,   etc   ; density functional theory; energy; semiconductors; thermal stability;     Show all 5 Subjects
Abstract:
... Searching for novel two-dimensional (2D) materials is highly desired in the field of nanoelectronics. We here predict a new 2D crystal barium triarsenide (BaAs₃) with a series of encouraging functionalities within density functional theory. Being kinetically and thermally stable, the monolayer and bilayer forms of BaAs₃ possess narrow indirect band gaps of 0.74 eV and 0.34 eV, respectively, with h ...
DOI:
10.1007/s10853-019-03796-y

18. Recent progress in piezoelectric thin film fabrication via the solvothermal process

Author:
Li, Lijie; Miao, Lei; Zhang, Zhen; Pu, Xiaohua; Feng, Qi; Yanagisawa, Kazumichi; Fan, Yong; Fan, Mingjin; Wen, Puhong; Hu, Dengwei
Source:
Journal of materials chemistry A 2019 v.7 no.27 pp. 16046-16067
ISSN:
2050-7496
Subject:
barium titanate,   etc   ; ceramics; solid solutions; temperature; zinc oxide;     Show all 5 Subjects
Abstract:
... The solvothermal process, a relatively simple process, has been regarded as one of the most attractive and promising film preparation methods. The prepared thin films do not need to be treated with high temperature, and this process has been widely applied in the fields of piezoelectric, ferroelectric and oxide thin films. In the present review, the development of piezoelectric thin films fabricat ...
DOI:
10.1039/c9ta04863d

19. The formation and effect of defect dipoles in lead-free piezoelectric ceramics: A review

Author:
Zhao, Zhi-Hao; Dai, Yejing; Huang, Feng
Source:
Sustainable materials and technologies 2019 v.20 pp. e00092
ISSN:
2214-9937
Subject:
barium titanate,   etc   ; ceramics; electric field; hysteresis; potassium; sodium; temperature;     Show all 7 Subjects
Abstract:
... As one of the most crucial intrinsic contributions, defect dipoles show unique and prominent influence on the responsive behavior of piezoelectric ceramics. Here, we present the formation of the defect dipoles and the state-of-the-art effect on lead-free piezoelectric ceramics in detail. First, the formation of defect dipoles in ceramics are demonstrated. The coupling effect between defect dipole ...
DOI:
10.1016/j.susmat.2019.e00092

20. [Ba₁₃Sb₃₆Cl₃₄O₅₄]⁸⁻: high-nuclearity cluster for the assembly of nanocluster-based compounds

Author:
Wu, Zhao-Feng; Hu, Bing; Fu, Zhi-Hua; Wang, Hao; Xu, Gang; Gong, Liao-Kuo; Zou, Guo-Dong; Huang, Xiao-Ying; Li, Jing
Source:
Chemical communications 2019 v.55 no.52 pp. 7442-7445
ISSN:
1364-548X
Subject:
barium,   etc   ; antimony; chemical reactions; chlorides; nanocomposites; oxygen; protons;     Show all 7 Subjects
Abstract:
... Herein, we report two nanocluster-based compounds built on an unprecedented cluster [Ba₁₃Sb₃₆Cl₃₄O₅₄]⁸⁻, which represents the first example of a discrete alkaline earth (AE)-containing oxochloride cluster and the largest Sb-based oxohalide cluster to date; the proton-conducting property of the compounds was investigated. ...
DOI:
10.1039/c9cc02145k

21. Enhanced Electrocaloric Effect in Sr²⁺-Modified Lead-Free BaZrₓTi₁–ₓO₃ Ceramics

Author:
Jian, Xiao-Dong; Lu, Biao; Li, Dan-Dan; Yao, Ying-Bang; Tao, Tao; Liang, Bo; Lin, Xiong-Wei; Guo, Jin-Hong; Zeng, Yi-Jiang; Lu, Sheng-Guo
Source:
ACS applied materials & interfaces 2019 v.11 no.22 pp. 20167-20173
ISSN:
1944-8252
Subject:
barium,   etc   ; X-ray diffraction; ceramics; scanning electron microscopy; strontium; temperature;     Show all 6 Subjects
Abstract:
... Barium strontium zirconate titanate ceramics ((BaSr)(ZrTi)O₃-BSZT) with Zr⁴⁺ ionic contents of 15 and 20 mol % and Sr²⁺ ionic contents of 15, 20, 25, and 30 mol % were prepared using a solid-state reaction approach. X-ray diffraction and scanning electron microscopy were used to characterize the lattice structure and morphologies of the ceramics. Permittivity and polarization as a function of temp ...
DOI:
10.1021/acsami.9b04036

22. Biotransformation of 4-nitrophenol by co-immobilized Geobacter sulfurreducens and anthraquinone-2-sulfonate in barium alginate beads

Author:
Rodriguez, Sujei Y.; Cantú, Maria E.; Garcia-Reyes, Bernardo; Garza-Gonzalez, Maria T.; Meza-Escalante, Edna R.; Serrano, Denisse; Alvarez, Luis H.
Source:
Chemosphere 2019 v.221 pp. 219-225
ISSN:
0045-6535
Subject:
barium,   etc   ; Geobacter sulfurreducens; alginates; biotransformation; p-nitrophenol; pH;     Show all 6 Subjects
Abstract:
... Geobacter sulfurreducens and anthraquinone-2-sulfonate (AQS) were used suspended and immobilized in barium alginate during the biotransformation of 4-nitrophenol (4-NP). The assays were conducted at different concentrations of 4-NP (50–400 mg/L) and AQS, either in suspended (0–400 μM) or immobilized form (0 or 760 μM), and under different pH values (5–9). G. sulfurreducens showed low capacity to r ...
DOI:
10.1016/j.chemosphere.2019.01.041

23. An air‐assisted flow‐gating interface for capillary electrophoresis

Author:
Opekar, František; Tůma, Petr
Source:
Electrophoresis 2019 v.40 no.4 pp. 587-590
ISSN:
0173-0835
Subject:
barium,   etc   ; capillary electrophoresis; cations; computers; lithium; magnesium; pH; potassium; sodium;     Show all 9 Subjects
Abstract:
... A new kind of flow gating interface (FGI) has been designed for online connection of CE with flow‐through analytical techniques. The sample is injected into the separation capillary from a space from which the BGE was forced out by compressed air. A drop of sample solution with a volume of 75 nL is formed between the outlet of the delivery capillary supplying the solution from the flow‐through app ...
DOI:
10.1002/elps.201800421

24. Enhancement of electromagnetic interference shielding effectiveness with alignment of spinnable multiwalled carbon nanotubes

Author:
Lee, Duck Weon; Park, Jongwoo; Kim, Bum Joon; Kim, Hyunsoo; Choi, Changsoon; Baughman, Ray H.; Kim, Seon Jeong; Kim, Youn Tae
Source:
Carbon 2019 v.142 pp. 528-534
ISSN:
0008-6223
Subject:
barium titanate,   etc   ; carbon; carbon nanotubes; electromagnetic interference; iron oxides;     Show all 5 Subjects
Abstract:
... This research develops a unique material to attenuate electromagnetic interference (EMI) by using spinnable multiwalled carbon nanotubes (MWNTs) combined with bio-polydimethylsiloxane (PDMS) that contains BaTiO3 (MBPBT). In particular, a plaid pattern, formed by the spinnable MWNTs, is very effective in attenuating the propagation of EM waves,which achieves over 20 dB at 8.2–12.4 GHz (X-band frequ ...
DOI:
10.1016/j.carbon.2018.10.076

25. Magnetic interactions in the S = 1/2 square-lattice antiferromagnets Ba₂CuTeO₆ and Ba₂CuWO₆: parent phases of a possible spin liquid

Author:
Mustonen, Otto; Vasala, Sami; Mutch, Heather; Thomas, Chris I.; Stenning, Gavin B. G.; Baggio-Saitovitch, Elisa; Cussen, Edmund J.; Karppinen, Maarit
Source:
Chemical communications 2019 v.55 no.8 pp. 1132-1135
ISSN:
1364-548X
Subject:
barium,   etc   ; chemical reactions; copper; liquids; magnetism; strontium; tellurium; tungsten;     Show all 8 Subjects
Abstract:
... The isostructural double perovskites Ba₂CuTeO₆ and Ba₂CuWO₆ are shown by theory and experiment to be frustrated square-lattice antiferromagnets with opposing dominant magnetic interactions. This is driven by differences in orbital hybridisation of Te⁶⁺ and W⁶⁺. A spin-liquid-like ground state is predicted for Ba₂Cu(Te₁₋ₓWₓ)O₆ solid solution similar to recent observations in Sr₂Cu(Te₁₋ₓWₓ)O₆. ...
DOI:
10.1039/c8cc09479a

26. Identifying a Cyan Ultralong Persistent Phosphorescence (Ba, Li) (Si, Ge, P)₂O₅:Eu²⁺, Pr³⁺ via Solid Solution Strategy

Author:
Feng, Peng; Li, Gen; Guo, Haijie; Liu, Dongwei; Ye, Qiangfei; Wang, Yuhua
Source:
Journal of physical chemistry 2019 v.123 no.5 pp. 3102-3109
ISSN:
1932-7455
Subject:
barium,   etc   ; crystal structure; europium; germanium; ions; phosphorescence; photoluminescence; silicon; thermoluminescence;     Show all 9 Subjects
Abstract:
... A series of cyan emission (Ba, Li) (Si, Ge, P)₂O₅:Eu²⁺, Pr³⁺ long persistent phosphors (LPP) were designed by solid solution strategy and synthesized by solid-state reaction; the crystal structure and photoluminescence of this long persistent phosphor have been analyzed systematically. Under 256 nm light excitation, the as-prepared (Ba, Li) (Si, Ge, P)₂O₅:Eu²⁺, Pr³⁺ presents a strong cyan emission ...
DOI:
10.1021/acs.jpcc.8b11084

27. Radical and oxidative pathways in the pyrolysis of a barium propionate-acetate salt

Author:
Rasi, Silvia; Ricart, Susagna; Obradors, Xavier; Puig, Teresa; Roura-Grabulosa, Pere; Farjas, Jordi
Source:
Journal of analytical and applied pyrolysis 2019 v.141 pp. 104640
ISSN:
0165-2370
Subject:
barium; barium carbonate,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; ketones; methanol; propionic acid; pyrolysis; thermal properties; thermogravimetry;     Show all 10 Subjects
Abstract:
... Film and powder samples from a BaAc2 solution in propionic acid/MeOH were decomposed in different atmospheres and their thermal decomposition was characterized by means of thermogravimetry coupled with evolved gas analysis techniques (TG-FTIR, EGA-MS) and chemical and structural methods (EA, XRD, FTIR). The thermal behavior of the films was found to be different than the corresponding powder, in t ...
DOI:
10.1016/j.jaap.2019.104640

28. CO₂-tolerant (Y,Tb)Ba(Co,Ga)₄O₇ cathodes with low thermal expansion for solid oxide fuel cells

Author:
Lai, Ke-Yu; Manthiram, Arumugam
Source:
Journal of materials chemistry A 2019 v.7 no.14 pp. 8540-8549
ISSN:
2050-7496
Subject:
barium; barium carbonate,   etc   ; air; carbon dioxide; catalysts; catalytic activity; cathodes; electrochemistry; fuel cells; oxygen; strontium; strontium carbonate; thermal expansion;     Show all 13 Subjects
Abstract:
... Oxide catalysts with alkaline earth metal dopants, such as Sr²⁺ and Ba²⁺, are widely applied as cathode materials in intermediate-temperature solid oxide fuel cells (IT-SOFCs). However, one of the irreversible performance degradation mechanisms is the formation of BaCO₃ and SrCO₃ on the cathode surface when CO₂ in air reacts with the cathode. This study presents a series of CO₂-tolerant swedenborg ...
DOI:
10.1039/c9ta01338e

29. An ex vivo comparison of cuffed endotracheal tubes and self-sealing baffled endotracheal tubes

Author:
Loomis, SL; Okrasinski, EB
Source:
New Zealand veterinary journal 2018 v.66 no.6 pp. 297-301
ISSN:
1176-0710
Subject:
barium; barium sulfate,   etc   ; dogs; endoscopes; endoscopy; models; silicone; trachea (vertebrates);     Show all 8 Subjects
Abstract:
... To compare cuffed silicone endotracheal tubes with self-sealing baffled silicone endotracheal tubes in an ex vivo canine tracheal model, to determine whether the tubes differed in their maintenance of a seal and their effectiveness in removing fluid from the tracheal lumen, and whether the self-sealing endotracheal tubes would release pressure when a closed anaesthetic circuit reached ≥30 cm H₂O. ...
DOI:
10.1080/00480169.2018.1502101

30. Luminescent metal clusters/barium sulfate composites for white light-emitting devices and anti-counterfeiting labels

Author:
Wang, Min; Huang, Zhenzhen; Guo, Zilong; Yang, Wensheng
Source:
RSC advances 2018 v.8 no.6 pp. 2866-2871
ISSN:
2046-2069
Subject:
barium; barium sulfate,   etc   ; color; dispersions; emissions; ions; luminescence; nanoparticles; solvents;     Show all 9 Subjects
Abstract:
... The applications of luminescent metal nanoclusters (NCs) in device fabrication have been greatly limited by their tough solidifying process and poor stability. In this work, we report the facile preparation of metal NCs/barium sulfate (BaSO₄) composites by incorporating luminescent metal NCs into BaSO₄ matrix by subsequent addition of Ba²⁺ and SO₄²⁻ ions into the aqueous dispersions of the metal N ...
DOI:
10.1039/c7ra11804j

31. Nanoscale Mosaic Works: Tetragonal Lattices of Iso-Oriented Heterogeneous Nanocubes

Author:
Matsumoto, Riho; Yamazaki, Hiroya; Takasaki, Mihiro; Oaki, Yuya; Sato, Tetsuya; Imai, Hiroaki
Source:
Langmuir 2018 v.34 no.13 pp. 4031-4035
ISSN:
1520-5827
Subject:
barium titanate,   etc   ; nanomaterials; oleic acid;     Show all 3 Subjects
Abstract:
... Tetragonal 2D lattices are spontaneously formed by the self-assembly of homogeneous nanocubes. However, ordered arrays consisting of differently sized rectangular nanoblocks have not been achieved because the regulation of the assembly is weakened by the combination of binary units. In the present work, ordered arrays comprising binary nanocubes were investigated using the combination of 10 nm Pt ...
DOI:
10.1021/acs.langmuir.8b00364

32. Non-hazardous Treatment for Barium Slag Using Phosphogypsum

Author:
Gu, Hannian; Guo, Tengfei; Dai, Yang; Wang, Ning
Source:
Waste and biomass valorization 2019 v.10 no.10 pp. 3157-3161
ISSN:
1877-2641
Subject:
barium; barium compounds,   etc   ; X-ray diffraction; X-ray fluorescence spectroscopy; barite; environmental impact; industrial wastes; leaching; neutralization; phosphogypsum; slags; sulfates; toxic substances; toxicity testing;     Show all 14 Subjects
Abstract:
... Barium compounds are important chemical materials obtained from barite. Barium slag (BS) is an insoluble alkali residue derived from the product of barium compounds following the process of carbothermal reduction and water/acid leaching. In this study, two BS-derived samples named BS-YP and BS-ZN were characterized using analytical methods of XRF, ICP-MS and XRD. The environmental impacts of both ...
DOI:
10.1007/s12649-018-0308-8

33. Indirect electrochemical determination of sulfates in mineral water by a flow-through system

Author:
Cacho, Frantisek; Masac, Jakub; Zakhar, Ronald; Beinrohr, Ernest
Source:
Talanta 2019
ISSN:
0039-9140
Subject:
barium; barium sulfate,   etc   ; bicarbonates; boiling; carbon; carbonates; chromates; chromium; detection limit; electrochemistry; electrodes; equations; hydrochloric acid; ion exchange chromatography; mineral water; reference standards; solubility;     Show all 17 Subjects
Abstract:
... The paper describes the indirect determination of sulfates by in-electrode coulometric indication method. The principle of the determination of sulfates consists in the on-line coupling of the exchange column filled with barium chromate and the flow-through coulometric analyser. In the column BaCrO4(s) converts to BaSO4(s) according to the equation: BaCrO4(s)+SO42−(aq)→BaSO4(s)+CrO42−(aq). This co ...
DOI:
10.1016/j.talanta.2019.120281

34. Acute barium poisoning in a dog after ingestion of handheld fireworks (party sparklers)

Author:
Stanley, Monique K.; Kelers, Kylie; Boller, Elise; Boller, Manuel
Source:
Journal of veterinary emergency and critical care 2019 v.29 no.2 pp. 201-207
ISSN:
1479-3261
Subject:
barium; barium nitrate,   etc   ; blood serum; chelation; dogs; females; fluid therapy; heart; hypokalemia; ingestion; magnesium sulfate; mass spectrometry; muscles; normal values; pH; paralysis; poisoning; potassium; potassium chloride;     Show all 19 Subjects
Abstract:
... OBJECTIVE: To report a case of acute barium poisoning in a dog subsequent to ingestion of a common handheld pyrotechnic (sparkler). CASE SUMMARY: A 5‐year‐old female neutered German Shorthaired Pointer presented with acute onset of generalized flaccid muscle paralysis and fasciculations, ptyalism, and an irregular heart rhythm. Marked hypokalemia (1.9 mmol/L [mEq/L]; reference range [3.5–5.8 mmol/ ...
DOI:
10.1111/vec.12820

35. Rare earth elements in mud volcano sediments from the Gulf of Cadiz, South Iberian Peninsula

Author:
Carvalho, Lina; Monteiro, Rui; Figueira, Paula; Mieiro, Cláudia; Pereira, Eduarda; Magalhães, Vítor; Pinheiro, Luís; Vale, Carlos
Source:
The Science of the total environment 2019 v.652 pp. 869-879
ISSN:
0048-9697
Subject:
barium; barium sulfate,   etc   ; aluminum; calcium; gadolinium; gravity; iron; magnesium; manganese; methane; oxidation; particle size distribution; sediments; shale; strontium; volcanoes; Iberian Peninsula;     Show all 17 Subjects
Abstract:
... Eight gravity cores (GC) were retrieved from the deep mud volcanoes Sagres, Bonjardim, Soloviev and Porto in the Gulf of Cadiz. Cores with 137 to 317 cm long were sliced in intervals of 15 to 20 cm thickness, and 46 samples were analyzed for grain size distribution, loss on ignition, Al, Fe, Ca, Mg, Mn, Sr, Ba and the rare earth elements (REE) La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu. ...
DOI:
10.1016/j.scitotenv.2018.10.227

36. Surface reactivity and cation non-stoichiometry in BaZr₁₋ₓYₓO₃₋δ (x = 0–0.2) exposed to CO₂ at elevated temperature

Author:
Sažinas, Rokas; Sunding, Martin F.; Thøgersen, Annett; Sakaguchi, Isao; Norby, Truls; Grande, Tor; Polfus, Jonathan M.
Source:
Journal of materials chemistry A 2019 v.7 no.8 pp. 3848-3856
ISSN:
2050-7496
Subject:
barium; barium carbonate,   etc   ; X-ray photoelectron spectroscopy; carbon dioxide; cations; ceramics; chemical reactions; electrochemistry; microstructure; scanning electron microscopy; steam; temperature; transmission electron microscopy; yttrium; zirconium;     Show all 15 Subjects
Abstract:
... The reactivity of BaZr₁₋ₓYₓO₃₋δ (x = 0–0.2) ceramics under 1 atm CO₂ at 650 °C for up to 1000 h was investigated in order to elucidate possible degradation processes occurring when the material is applied as a proton-conducting electrolyte in electrochemical devices. The annealed ceramics were characterized by a range of techniques (SEM, TEM, GIXRD, XPS and SIMS) with respect to changes in the pha ...
DOI:
10.1039/c8ta11021b

37. Cutting frequency effect on barium phytoextraction by macrophytes in flooded environment: A field trial

Author:
Viana, Douglas Gomes; Pires, Fábio Ribeiro; Egreja Filho, Fernando Barboza; Bonomo, Robson; Martins, Luiz Fernando; Costa, Kerwin Araújo; Ferreira, Amanda Duim; Madalão, João Carlos; Rocha Junior, Paulo Roberto da; Nascimento, Mauro César Pinto; Cruz, Leila Beatriz Silva; Dias, Orlando Soares
Source:
Journal of hazardous materials 2019 v.362 pp. 124-131
ISSN:
0304-3894
Subject:
barium; barium sulfate,   etc   ; Eleocharis; Typha domingensis; cutting frequency; ecosystems; environmental factors; field experimentation; macrophytes; petroleum; phytoaccumulation; phytomass; plant cuttings; plant tissues; redox potential; soil depth; Brazil;     Show all 17 Subjects
Abstract:
... In anoxic environmental conditions and with a drastic reduction of the redox potential, the barium sulphate used in petroleum drilling fluids becomes a hazard to the ecosystem. A field study was conducted in Brazil in an area with a history of accidental Barium (Ba) contamination to evaluate the role of frequent plant cutting on phytoremediation. The plant species Typha domingensis and Eleocharis ...
DOI:
10.1016/j.jhazmat.2018.08.091

38. Improved approach for LSC detection of 35S aiming at its application as tracer for short groundwater residence times

Author:
Schubert, M.; Kopitz, J.; Knöller, K.
Source:
Journal of environmental radioactivity 2019 v.208-209 pp. 106022
ISSN:
0265-931X
Subject:
barium sulfate,   etc   ; Earth atmosphere; analytical methods; aquifers; groundwater; half life; liquids; radioactivity; radionuclides; rain;     Show all 10 Subjects
Abstract:
... The knowledge of groundwater residence times in (vulnerable) aquifers is essential for the sustainable management of the associated groundwater resources. A powerful tool for related investigations is the application of naturally occurring radioisotopes as water age indicators. However, due to the limited number of suitable (i.e. omnipresent, short-lived and easily detectable) radionuclides only f ...
DOI:
10.1016/j.jenvrad.2019.106022

39. Barium isotopic fractionation in latosol developed from strongly weathered basalt

Author:
Gong, Yingzeng; Zeng, Zhen; Zhou, Chen; Nan, Xiaoyun; Yu, Huimin; Lu, Ying; Li, Wangye; Gou, Wenxian; Cheng, Wenhan; Huang, Fang
Source:
The Science of the total environment 2019 v.687 pp. 1295-1304
ISSN:
0048-9697
Subject:
barium,   etc   ; adsorption; basalt; bedrock; isotope fractionation; isotopes; minerals; models; river water; soil profiles; weathering; China;     Show all 12 Subjects
Abstract:
... Weathering is a key process in the transfer of material from continents to the hydrosphere. A latosol profile in Zhanjiang, Guangdong Province, South China, formed through intense weathering of basalt, was studied to improve understanding of Ba isotopic fractionation during basalt weathering. Profile horizons were grouped into Ba-depleted and Ba-enriched layers (D- and E-layers, respectively) acco ...
DOI:
10.1016/j.scitotenv.2019.05.427

40. Effect of BaTiO3 nanowire distribution on the dielectric and energy storage performance of double-layer PVDF-based composites

Author:
Feng, Yu; Li, Jia-Long; Li, Wei-Li; Li, Meng-Lu; Chi, Qing-Guo; Zhang, Tian-Dong; Fei, Wei-Dong
Source:
Composites 2019 v.125 pp. 105524
ISSN:
1359-835X
Subject:
barium titanate,   etc   ; capacitance; composite materials; dielectric properties; energy; finite element analysis; nanowires; prediction;     Show all 8 Subjects
Abstract:
... A series of novel double-layer PVDF-based composites filled with different concentration of BaTiO3 nanowire were fabricated employing hot-pressing process. The effects of various BT-NWs concentrations in isolated layers on the dielectric properties, energy storage density of the composites were investigated. The experimental dielectric constants of double-layer composites are lower than expected. ...
DOI:
10.1016/j.compositesa.2019.105524

41. Fabrication of core-shell structured Ni@BaTiO3 scaffolds for polymer composites with ultrahigh dielectric constant and low loss

Author:
Zhu, Xiaotong; Yang, Jie; Dastan, Davoud; Garmestani, Hamid; Fan, Runhua; Shi, Zhicheng
Source:
Composites 2019 v.125 pp. 105521
ISSN:
1359-835X
Subject:
barium titanate,   etc   ; coatings; composite materials; dielectric properties; epoxides; nickel; polymers; transistors;     Show all 8 Subjects
Abstract:
... Dielectric composites have drawn increasing attention owing to their wide applications in electrical systems. Herein, a novel design of dielectric composites consisting of core-shell structured porous Ni@BaTiO3 scaffolds infiltrated with epoxy was developed. It is demonstrated that the dielectric constants of the composites could be as high as 6397@10 kHz, which is approximately 1777 times higher ...
DOI:
10.1016/j.compositesa.2019.105521

42. Origin of the large electrostrain in BiFeO₃-BaTiO₃ based lead-free ceramics

Author:
Wang, Ge; Fan, Zhongming; Murakami, Shunsuke; Lu, Zhilun; Hall, David A.; Sinclair, Derek C.; Feteira, Antonio; Tan, Xiaoli; Jones, Jacob L.; Kleppe, Annette K.; Wang, Dawei; Reaney, Ian M.
Source:
Journal of materials chemistry A 2019 v.7 no.37 pp. 21254-21263
ISSN:
2050-7496
Subject:
barium,   etc   ; X-ray diffraction; anisotropy; bismuth; ceramics; chemical bonding; ions; models; transmission electron microscopy; Polar Regions;     Show all 10 Subjects
Abstract:
... High electrostrain and breakdown strength (1 − x)BiFeO₃-0.3BaTiO₃-xNd(Li₀.₅Nb₀.₅)O₃ (BF-BT-xNLN) ceramics were studied by in situ synchrotron X-ray diffraction (XRD) in combination with Rietveld refinement and conventional transmission electron microscopy. At zero field, compositions transformed from majority ferroelectric rhombohedral to pseudocubic as the NLN concentration increased, with 0.27% ...
DOI:
10.1039/c9ta07904a

43. Modelling transport of reactive tracers in a heterogeneous crystalline rock matrix

Author:
Svensson, Urban; Voutilainen, Mikko; Muuri, Eveliina; Ferry, Michel; Gylling, Björn
Source:
Journal of contaminant hydrology 2019
ISSN:
0169-7722
Subject:
barium,   etc   ; X-radiation; cesium; computed tomography; gneiss; granite; minerals; models; probability; radionuclides; sorption; tracer techniques;     Show all 12 Subjects
Abstract:
... A numerical reactive transport model for crystalline rocks is developed and evaluated. The model is based on mineral maps generated by X-ray micro computed tomography (X-μCT); the maps used have a resolution of approximately 30 μm and the rock samples are on the cm scale. A computational grid for the intergranular space is generated and a micro-DFN (Discrete Fracture Network) model governs the gri ...
DOI:
10.1016/j.jconhyd.2019.103552

44. Curing kinetics of chemically recyclable thermoset and their nanocomposites

Author:
Bello, Roger H.; Coelho, Luiz A.F.
Source:
Thermochimica acta 2019 v.679 pp. 178317
ISSN:
0040-6031
Subject:
barium titanate,   etc   ; activation energy; carbon nanotubes; catalytic activity; models; nanocomposites; nanoparticles; polymers;     Show all 8 Subjects
Abstract:
... In this work the role of the addition of barium titanate (BaTiO3) or multi-walled carbon nanotubes (MWCNT) on curing kinetics of the polyhexahydro-s-triazine (PHT) was investigated. The estimation of kinetic parameters triplet (activation energy, pre-exponential factor, and the reaction model) of PHT and its nanocomposites were made by isoconversional models. It is possible to state the conversion ...
DOI:
10.1016/j.tca.2019.178317

45. Simultaneous measurements of mass, chemical compositional and number characteristics of aerosol particles emitted during fireworks

Author:
Joshi, Manish; Nakhwa, Amruta; Khandare, Pallavi; Khan, Arshad; Mariam,; Sapra, B.K.
Source:
Atmospheric environment 2019
ISSN:
1352-2310
Subject:
barium,   etc   ; aerosols; aluminum; atmospheric chemistry; chemical composition; cities; copper; emissions; particulates; strontium; urban areas;     Show all 11 Subjects
Abstract:
... Simultaneous measurements of mass, chemical composition and number characteristics were made to study the impact of emissions from fireworks on ambient aerosol characteristics. These measurements were performed in a high-rise building of an Indian mega-city during Diwali festival. The mass concentration of total suspended particulate matter on Diwali night was found to be 364 μgm−3 and is comparab ...
DOI:
10.1016/j.atmosenv.2019.116925

46. Sandwich structure-assisted significantly improved discharge energy density in linear polymer nanocomposites with high thermal stability

Author:
Marwat, Mohsin Ali; Xie, Bing; Zhu, Yiwei; Fan, Pengyuan; Liu, Kai; Shen, Meng; Ashtar, Malik; Kongparakul, Suwadee; Samart, Chanatip; Zhang, Haibo
Source:
Colloids and surfaces 2019
ISSN:
0927-7757
Subject:
barium titanate,   etc   ; dielectric properties; electric field; energy; energy density; hysteresis; insulating materials; polymer nanocomposites; thermal stability;     Show all 9 Subjects
Abstract:
... The sandwich-structured barium titanate/poly(ether imide) (BT/PEI) nanocomposites are fabricated layer-by-layer, with outer two insulation layers (ILs) for high breakdown strength and a middle polarization layer (PL) for high dielectric constant, using solution casting technique. Consequently, the sandwich-structured BT/PEI nanocomposites with optimum BT NPs concentration in ILs and PL showed trem ...
DOI:
10.1016/j.colsurfa.2019.123802

47. Persistence of chromate in vadose zone and aquifer sediments in Hanford, Washington

Author:
Szecsody, Jim E.; Truex, Mike J.; Qafoku, Nikolla P.; McKinley, James P.; Ivarson, Kristine A.; Di Pietro, Silvina
Source:
The Science of the total environment 2019 v.676 pp. 482-492
ISSN:
0048-9697
Subject:
barium,   etc   ; aquifers; calcium; chromium; crystals; groundwater; iron; leaching; plagioclase; sediments; solubility; vadose zone; Washington (state);     Show all 13 Subjects
Abstract:
... This study of vadose zone and aquifer sediments beneath a former dichromate spill site showed that the persistence of CrVI in the sediments and the large differences in released mass and rate was caused by the dissolution of multiple CrVI surface phases. Vadose zone sediments contained numerous 1 to 10 μm high solubility calcium chromate crystals, with lesser amounts of unidentified phases indicat ...
DOI:
10.1016/j.scitotenv.2019.04.173

48. Crystal structure, chemical bonding, and physical properties of layered AIrSn2 (A = Sr and Ba)

Author:
Marshall, Madalynn; Xing, Lingyi; Sobczak, Zuzanna; Blawat, Joanna; Klimczuk, Tomasz; Jin, Rongying; Xie, Weiwei
Source:
Journal of materials science 2019 v.54 no.16 pp. 11127-11133
ISSN:
0022-2461
Subject:
barium,   etc   ; X-ray diffraction; chemical bonding; crystal structure; crystallization; specific heat; strontium; superconductivity;     Show all 8 Subjects
Abstract:
... We report the experimental and theoretical investigation of structure, chemical bonding interactions, and physical properties of new ternary stannides AIrSn₂ (A = Sr and Ba). AIrSn₂ (A = Sr and Ba) crystallizes in the orthorhombic Re₃B-type structure with the space group Cmcm (No. 64). According to single-crystal X-ray diffraction results, the structure of AIrSn₂ (A = Sr and Ba) can be considered ...
DOI:
10.1007/s10853-019-03681-8

49. Proton conductivity in yttrium-doped barium cerate under nominally dry reducing conditions for application in chemical synthesis

Author:
Loureiro, Francisco J. A.; Pérez-Coll, Domingo; Graça, Vanessa C. D.; Mikhalev, Sergey M.; Ribeiro, Alejandro F. G.; Mendes, Adélio; Fagg, Duncan P.
Source:
Journal of materials chemistry A 2019 v.7 no.30 pp. 18135-18142
ISSN:
2050-7496
Subject:
barium,   etc   ; carbonates; ceramics; dehydrogenation; dielectric spectroscopy; electrochemistry; hydrogenation; models; oxides; synthesis; temperature; thermogravimetry; titration;     Show all 13 Subjects
Abstract:
... Electrochemical membrane reactors using proton-conducting ceramics are promising and efficient technologies for the production of valuable chemical products by the promotion of hydrogenation/dehydrogenation reactions. Due to a very high equilibrium constant for hydration, yttrium-doped barium cerate, BaCe₀.₉Y₀.₁O₃₋δ (BCY10), presents one of the highest proton conductivities at low temperatures amo ...
DOI:
10.1039/c9ta04584h

50. Significantly improved dielectric properties of multiwall carbon nanotube-BaTiO₃/PVDF polymer composites by tuning the particle size of the ceramic filler

Author:
Silakaew, Kanyapak; Thongbai, Prasit
Source:
RSC advances 2019 v.9 no.41 pp. 23498-23507
ISSN:
2046-2069
Subject:
barium titanate,   etc   ; carbon nanotubes; ceramics; dielectric permittivity; dielectric properties; models; particle size;     Show all 7 Subjects
Abstract:
... The effects of different BaTiO₃ sizes (≈100 nm (nBT) and 0.5–1.0 μm (μBT)) on the dielectric and electrical properties of multiwall carbon nanotube (CNT)-BT/poly(vinylidene fluoride) (PVDF) composites are investigated. The fabricated three-phase composites using 20 vol% BT with various CNT volume fractions (fCNT) are systematically characterized. The dielectric permittivity (ε′) of the CNT-nBT/PVD ...
DOI:
10.1039/c9ra04933a